MiFare Sticker 13.56MHz NFC/RFID - 1KB

S50 chip specification:

1 KiloByte (8 KiloBit) non-volatile EEPROM storage
Built in encryption engine with 48-bit key
4 Byte unique identifier burned into the chip
13.56 MHz frequency

41mm x 24mm x 0.2mm / 1.6" x 1" x 0.008
0.3 grams / 0.01 oz
Works about 2.5" away from reader